[SI-LIST] Re: how to measure the coupling effect of the coupled lineswith vector network analyzer
- From: Paul Levin <levinpa@xxxxxxxxxxxxx>
- To: yadic@xxxxxxx
- Date: Wed, 23 Jul 2003 17:23:01 -0700
Dear Liu,
It isn't terribly accurate, but you could try using a "2-way, 180
degree splitter" or a "balun" (available from many RF sources including
Pasternack) to couple a single port of a vector network analyzer
to the two signal ports of your differential pair. Just to make
sure of the fudge factors, test with a pair of 50 ohm terminators
first to see what that reads.
Regards,
Paul
___________________
Liu Ye wrote:
> Hi,experts
> I have no time domain reflectometry, so it is difficult to obtain the
> differential impedance. Can I get the odd mode impedance with a frequency
> domain analyzer? How to input the differential signal to the coupled lines?
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--
Paul Levin
Senior Principal Engineer
Xyratex Storage Systems
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